Vsitoo S3 Heated Mug vs Ember Mug 2

Buy the Ember Mug 2 if you want the proven smart mug with a large track record and a 14 oz option. Buy the Vsitoo S3 if you want longer battery life, a steel body and a lower-risk first heated mug. The Ember has the better app and finish, but its 12,000-plus ratings include many reports of charging pins failing and coatings peeling. The Vsitoo is rated slightly higher on far fewer ratings, so treat its score as less settled.

• Choose the Vsitoo S3 if you want up to four hours off the coaster, a 316 stainless steel body and dry-boil protection.
• Choose the Ember Mug 2 if you want the established smart mug with a polished app, a 14 oz size and a long public track record.